Transesterification reaction of the BaSO4-filled PBT/Poly(ethylene terephthalate) blend

Sang Soo Lee, Junkyung Kim, Min Park, Soonho Lim, Chul Rim Choe

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


For the poly(butylene terephthalate) (PBT)/poly(ethylene terephthalate) blend system, the addition of a barium sulfate (BaSO4) particle, the surface of which was modified with a titanate coupling agent, suppressed the transesterification reaction. The polyester chain ends, considered one of the main sites of transesterification reactions, were blocked through a chemical reaction with the surface hydroxyl groups of the BaSO4 particle; a block copolymer-like architecture was obtained with a BaSO4 linkage. The formation of the block copolymer-like structure for the polyesters stuck to the BaSO4 particle facilitated crystallization by providing a crystallization nucleus without a significant transesterification reaction, resulting in higher mechanical properties.

Original languageEnglish
Pages (from-to)2589-2597
Number of pages9
JournalJournal of Polymer Science, Part B: Polymer Physics
Issue number21
Publication statusPublished - 2001 Nov 1


  • Barium sulfate
  • Interfaces
  • PBT/poly(ethylene terephthalate) blends
  • Titanate coupling agent
  • Transesterification

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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